JUKI MO-6000G Series Engineer's Manual page 53

Adjustment Procedures
1) Remove the top cover.
2) Turn the handwheel to bring the top feed dog to the Io·west
point of its stroke.
3) Loosen locus cut screw nut
O
and tighten locus cut screw
9.
Then the top feed dog rises.
4)
When a proper cut amount is obtained, tighten locus cut screw
nut
8
so that locus cut screw
8
does not turn.
5) Loosen the setscrew in the top
feed
dog and lower the top feed
dog to the position where
it
bites cloth.
(Caution}
1.
When using the machine with locus cut, use
the machine at a speed of 5,500 rpm or less.
2. When the cut amount exceeds 1 mm or more,
a forced load Is applied to the mechanism.
Use the machine with locus cut of less than
1 mm.
1) Remove the top cover and loosen clamping screw
O
in the top
feed arm C to adjust the position.
2) The tightening torqueses of clamping screw
O
in the top feed
arm C after the adjustment is BON.
(Caution) 1. Do not completely loosen clamping screw
0
in the top feed arm C.
2. If clamping screw
O
in
the top feed arm C is
loosened and has moved to the right or left,
completely loosen
it,
turn the handwheel
and tighten it at the position where it
comes
naturally.
-49 ·-
Results of Improper Adjustment
o The lifted amount from the
lowest point in the step
3)
is the
cut amount. In this state, the
clearance between top and
bottom teeth is increased as
large as the cut portion and feed
force is decreased. Be sure to
adjust the biting amount of cloth
by lowering the top feed dog in
the step 5).
o When dimension A is improper,
top feed dog
O
comes in contact
with presser
0,
and noise
occurs.
Besides, the dimension is
excessively improper, the top
feed dog may come in contact
with other components in the
frame. Be careful when
performing the adjustment.
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